Fireproof elevator-door



Patented June 8,1920. I

B. WEXLER.

vI'IIIIEPIIOIIF ELEVATOR DOOR'. 1

APPLICATION FILED OCT. 3l. I9I8.

Y thereof.

BENJAMIN; WEXLERF BROOKLYN, ,NEW YORK, Vrissiefivo'ia ToV 'rirn' PEELLE compania rOF BROQKLYNiNEWIYORIL A COREORATION y01'41" NEVI' FIOR/K4 v 1 Y EIR'PROOF LEv'onJ-noon.

a citizen of the United States, residing at` the borough of Brooklyn, in the Vcity of New York, county of Kings, and State' of New York, have invented certain new and useful Improvements in Fireproof Elevator- Doors, of which the following isF a specication, reference, beinghad therein tothe ac'- companying drawings, which form apart My invention'relates to vfireproof elevator doors, and more particulaytrlyfto improvements in a type of door known as'the truckable type, embodying thereintwo vertically sliding sections, movable in Substantially the same vertical plane, the lower vsection'being arrested by means of suitablek stops, 'while at substantially the level of thesill of the door opening, so as toj span the gap between said sill and anjelevato'r `lcar, to facilitate the movement of alload between a1' floor .ofthe building and'said car.

f In a door of the type vertical center of the door` has a tendency to warp, the entire door structure, however solidly the door may be constructed. Such doors are made of a channeled metal frame, thek corners of which are mitered, the'panel of the'door vbeing made of timbers'having a metallic sheathingto prevent fire from attacking the -woodwork of thepanels. The frames are bolted to vthe panels and vthe hanger bar is connected by bolts through the wooden panel and the metal frame there Y vyield or spring slightly;` 'Thefframe ofthe with the wooden panel, so thatV these stresses door,however, is supported only by thefbolt's connecting the hanger bar therewith, and

as to vtheV door proper,`have`a tendency to to which my inven! tionrrelates, the'lower'door section is sub-y jected-to very severe and variablestresses.v v This is particularly true .as to wide doors v where the'pas'sage of a heavy load across the thus prevent skewing 'ofthe door.

sp'ecliffrfitionautresnew.4 j Viiateiireld` Jun@ 8,1920' Application siga Vo'mier31,71971s. serialY Nol 2611456, A

tilt the door .in its` entirety, and force the Y edge ofthe frameby degrees into vthe wooden panel, since the sides oftheframe are lheld by the tracks orv guides against such Inovement. Itis alsordiliicult in a' door of this 60 structure, to prevent skewing vof the doorby Vreason of lthe impossibility of securing asufciently rigid vconnection between the side flanges of thel angle kiron lstock from which the frame-is made, at the upper coriners thereof. i c. 'I Withth'ese conditions iii mind, I have pro4` duced a.'ireproofelevatorfdoor of the truck,-

able type, wherein the upper portion of the framev of the lower door sectionY will be so Vconstructed as to Vpossess sufficient rigidity l l to withstand the'Y severe stresseslto whicha door'of this character" is subjected inV use. rlhe structure of the doorv'is suchrthatthe tendency thereofv to tilt under aload, is ref-7,5 duced to a minimum, and the cuttingof the frame into the wooden panel is completely eliminated. Furthermore, atendency of the bolts connecting .the hanger bar with other* parts 'of the door structure, to loosen as .a 80 result ofthe racking of they door, is avoided'.

n rlhe same structure which is used for thus protecting the wooden panel and 'imparting vadditional rigidity to theh'anger bar, is also f u sed to increase the rigidity of the connecQS-` tion of the top and (side bars of the frame at the upper corner ofthe door section, and Y The results above referred to, are secured in 'a strncture requiringy substantially no 90 modification of the generaldesign of door now commonlyused, being'l capable of incorporation. in the door structure without "adding to the.thickness,of the. door, which -isja matter Vof great importance, since'the 95 space Vwithinfwhich said doors niust ,bei mounted, is ordinarily limited. 1

They-invention consists in a`fireproof-"ele-` ii vator doorjeinbodying therein thefnovel fea'- Vtures of construction". and combination of vparts, hereinafter setforth and described,

and nioref-:particularlyY pointedoutfin the claims hereto appended.'I

Referring to the drawings,

, Figurefl is lanl levation of an elevator door embodying .my invention, .said 'door being broken .on horizontal lines, a'ndf'condensed; n t" i Fig'Q is a verticalisection through the Y lower portion Vof v`the"upper,door section', 110

tion;

V3 is an elevation of `the'fraine struci Vture and*its-appurtenances, at one Vupper upper portion ofthe lower door section, and

the'lower portion 4of the upper doorrsection of a door embodying the form of the inven.

i' Y y the several views.

corner thereof, beforethe wooden' panelhas `been mounted therein;`

f Fig. 4' is a plan view vof one upper'corner of the lower door section of another embodiment of the invention; and

" F ig. 5 isa verticalse'ction through the tion shown in F ig. 4;' Y t Y v VLike letters refer to like parts throughout In the' embodiment ofl the lower section b, said sections being mounted in the usual manner upon tracks or` guides c arranged within-the shaft yupon opposite Y Y sides Yofthe door; 'oper'iingv The sections-d and Y) have movement in opposite directions 525 u on thesame .vertical plane, the section '5,

y fw ien the door is opeincomingto rest,` with the top thereofontsubstantially Ythe level of door.

vthe sillof the door opening.V Said sections V'may be of the same weight, to produce a' counterbalanced door structure, or the Vupper section may be overweightedto producel a self-closing door, `orthe lower section may be. overweigilited to produce a self-opening Carried by the supporting"structure V`for the tracks or guides c, adjacent the sill of the door opening, arefthe stops c', lby means of which the downward movement of the section is arrested, with this 'sec-tion inthe properposition in relation to the'rdoorV sill.

Thetwosections are connected by means of liexiblechains or cables (Z passing over suitably arranged pulleys dl. liesection a is composed of ametal frame a. inclosing a metal sheathed timberV panel a2 secured thereto by means of thebolts a3. t -The lower Vbar of the Vframea carries the .usual astragal bumper a4.

v The lower section is formed of a frame ivbof angle iron, similar to they frame a', a.V sheathed timber panel Z22, similar to the' panel a?, inclosed bythe frame t', Vand secured thereto by means of bolts b3. The structure ofthe section b differs from that Ofthesectiona in theconstruction at the top ofthe latter section, resulting from the necessity for reinforcing this portion of the.

- door-Qandconnecting the hangerbar thereto.

' In the formgof the invention shown, l the two` door sections areof substantially the same dimensions throughout, andare of l Y, substantially Ythe sanieweight.

Referring moleflmltculy JV the forlfls ofinventionshown in Figs. 1 to 3, to pre# vent the tilting'roff 'the top lbar of the Vframe andthe upperportionofthe lower door sec- .Y

l Y y invention Y Y shown in the drawings, I vhave illustrated a Qdoor composed ofran upper section a and aV b, I provide a metal plate el ofY substantially the same Width as the panel b2, so as to seat within the frame ,fthis plate beilngriveted .tofone flangev of the top bar in the manner- -shown in `Fig. 3, and to one flange of each side bar'in' a manner to increase Vthe stability of the miter joint atthetop corners yof theframej The plate e has Vadepth greater 1 than that of the flange of the top' bar, and

is provided with` two rows of suitable bolt openings e', at suitable intervals of theV length thereof; `'lhefend opening ofthe lower row of bolt openings e -is in register 1 with a bolt opening inthe flange of the side bars of thef'fraine bf', .1 The timber of the panel a2 is rabbetedt permit the plate e Vto be inset inithis panel, thus avoiding anyl incr'easein thethickness of the door. l Y

The Vplatee in addition Vto stiffening the lu'pperfpart ofthe frame 6", also servesas a bolts passing throughthe upper row ofbolt openings'reV andthe inturned yiianges of theV top and side angle bars fof the frame, not

only" imparting the desired rigidity tothe action under t e loads passing over the door to'rtheentire door structure, and thus pre# venting the mutilation of the panel b2 by the inturned top ange. v`

` l The'hanger bar,' intheform Vof the inven-Y tion yshown in Figs.` lto 3,is composed of av T-bar, one top iiange ofwhch rests. between the panelbz, vand the truck'flange ofthe bar f andthe platee, being protected by the angle bar of the frame, -may be closed if desired, by anysuitable vfiller, l'or may be left vacant. vSince the other angle of the stay-between the side bars of'thisframe, the

frame. Zi extending about the paneli, The y space between the top flange of theV hanger top of the' T-bar,projects beyond the truck flangev of the angle frame b1', secure 'to said T-bar flange, a suitable traction flushed withthe said truck` flange.-

The "hanger bar f is'V securedI in vposition with relationto the door section,v byemeans bar g Y i of vbolts z, passing through vtheupper row of i,

,bolt openings e in the inturned'flangeof the rim angle, the plate e, the panel b2, and

the stem of theV T-bar forming the hanger bar f, and through bolt Aopeningsvin a plate i parallel lwith'saidstem land forming therewith" adouble hanger barstructure.,l Other4 bolts /t pass' through the ylower yrow of ybolt openings Ve', in the plate @the panelbg7 and Said plate z', -and'fthrough both holes in@ 7:2

distance barV y' ofsubstantially the f same thickness'asthe 'stem ofthe hanger bar f. In this manner the entire loa'duponthedoor frame b is transmitted tothe hanger barff through theV various 'boltsfln thepanel 'b2 being relieved of substantiallyV all strains.

This condition is' further secured asv a result ofthe; passage of rthe end bolts ofthe ispo'` lower row, through the bolt openings e in the side bars-ofthe lframe Referring now tothe' form of invention shown in Figs; l'y and 5,`this construction is adapted for Ismaller doors,rthan that shown inFigs. lto 3. In this -form of the in.- vention I1 use'an angle bar, one flange 7G of whichvis "seated ina rabbet ,ofthe panel b2 andthe other flange Ic" of which extends across the top ofthis panel. The'fla'nge Ik 'is of substantially the widthof the panel b2, while the'flange-Y if: is of greater width Y and has 'each end thereof bent at-substantially right angles across-the side of said panel, and `then at right angles as shown in FigJl at 7a2.- Thetruckflange'of theftop bar of the frame b bears upon the flange 7c, and the inturned flange of said top bar bears upon the flangevc.- 11n this construction the flange k corresponds in vfunctionv in part-with the platee, andinpart with the steinof the T-bar 7;

,The flange i@ is rivetedto theginturned flange of thetop bar and the lside bars of the frame bin the same manner as the plate e the overhangof the flange 7c being reinforced withthe plate mwhich is secured in the :proper relation thereto Vby the bolts h in the same manner as the bar y'. This plate m extends beyond the panelV b2 and with the Y ends of the flange 7c', form extended hanger bars with which the chains orcables d arel connected, and which engage the 'stops c.-

In both Aforms of, the invention, the

frame. l

It is not my intention to limitthe invention lto the precise details of construction shown in the accompanying drawings, it being apparent that such may be varied with; out departing fromthe spirit andscope of a the invention.

Having described the invention, what I claim as new and desire to have Yprotected by Letters Patent is v 1. A reproof elevator door composed of two sliding sections oppositely movable in4 substantially the same vertical plane, the lower ofV said sectionshaving embodied therein a frame composed of top, bottom and side bars of angle metal, having one flange extending about the edge of said section, and thel other flange extending inwardly thereof, arvmetal sheathed timberV panel within said frame, metal ,reinforcements between thelanges of said topr bar and said panel and fupo'n the opposite side of said panel, the reinforcement adjacent said inwardly extending angle lof the' top bar of thev frame being permanently vsecured thereto fand to theinwardlyl extending flanges of the side bars, andv the reinforce-f ments on ropposite sides of said panel being bolted together Zand to said top andv said side bars, lateral extensions formingan integral part-of said 4reinforcements projectn ing beyond said side bars respectively, flexible connections between said'extenslons and the upper door section, ands'tops coperat-y ing with said extensions, whereby said lower door section will be sustained adjacent the side of a doorl opening ,and the load on the frame of the door will be ltra-nsmitted to saidextensions and said stops, and' tilting and -Yrocking of said' frame,v will be prevented. 1'*- i 2. A fireproof elevator door composed of Y two sliding sections oppo'sitely movable4 in substantially the same -vertical plane, the lower of` said sectionsAV having embodied therein a vframe composed oftop, bottom and side barsof angle metal, having oney flange-extending about the edge of saidsection, and the other `flange `extendingin wardly thereof, ametal sheathed timber panel within said frame, a metal plate permanently secured to the inwardly 'extendi ing flanges of said top, and said side bars,

and disposed between` said langeand said panel,a hanger bar having a flange extend-v ing parallel with said-plate, and a second.v

flange positioned between the 'edge Vflange of the frame and the top ofthe panel, the ends of said hanger bar projecting beyond said frame, bolts passing through the in-` wardly extending anges-of the'top and side barsof the frame, said' plate and the` parallel flange ofsaid hanger bar, exible connections between theprojecting ends of said hanger bar and the upper door section,`and stops coperating'with said extending ends, whereby said lowerdoor section will be sustained adjacent-the side `of a door opening and the load on the frame of j Y bar and said stops, yand tilting and rocking i the door will be transmitted to said hanger ofsaid frame will be prevented.

3; A fireproof elevator door composed of two sliding sections oppositely movable in `substantially the same vertical plane,`the lower, of said sections, having l embodied therein a frame composed of top, bottom and side bars of angle metal, having one flange extending'about the Vedge of said section,"

and the other flange extending inwardlyv thereof, a metal sheathed timber panel withl in said frame, a metal plate permanentlyse cured to the inwardly extending flanges of said top,and said side bars, and disposedy between said ange and said panel, aY hangerV v bar consisting of a ,Tbar, the'vstem of which V .passing through the inwardlyjextending flanges of the topv and side bars of the frame, said plate secured to vthe frame, the stemvof said' YT-barandcsaid reinforcing plate, flexible connections between Ythe projecting stein of said T-bar and the upper doork section, and stops cooperating with the projected ends of the stemyof said hanger bar,where. by said lower vd oor section will be ,sustainedV adjacent the side ofl a door opening andthe Y load on lthe frame of the 'door will be transmitted tov said hanger-bar and said stop, and

g tiltingand l,rocking of said frame willl be i Y Y prevented. Y Y c ,LQAVfireproof'elevator door composed of two lsliding sections oppositely movable .in

Y substantially the Vsame Vertical plane, the

Y lower of said ,sections having embodied` therein a frame composed of top, bottom and side bars of angle metal, having ,one flange extending about the vedge of said section,

y' andthe other flange I extending inwardly i thereof, a metal sheathed tiinber panel within said frame, a metal plate ypermanently se- 'curedto the inwardly extending flanges of -said top, and saidside bars, and disposed between said flange and said panel, a hanger bar consisting of a T.-bar, the stein of whichV Y extends parallelwith said-rplate,with one 0f its top flanges positionedfbetween the edge of saidframe, and the? top of. said panel,

andthe other topf ilangethereof projected .l I

beyondl saidframe, the stein of said T-bar extending laterally beyond said frame Yupon opposite sides f of the door'section, a rein` forcing plate bearingk upon,vv andV parallel with, theI stem of'said T-bar, andfe'ngaging-` the under side ofsaid projected flange, said last named plate being ofthe same length as the stern of said T-bar, whereby a double hanger bar structure is afforded, and said plate engaging the projected stern of saidvT- bar, bolts passing through theinwardly extending flanges of the top andside bars of the frame, said plate secured to thefranie,

the stern'of said T-bar'and said reinforcing plate, flexible connections between the projecting stem of said T-bar .and the upper door section, and stops coperating with the projected-ends ofY the stem ofsaid hanger bar, wherebysaid'i-lower doorsection will be sustained` adjacent ythe side of a door` Y opening :and the load on the frame ofthe door willv be transmitted to said hanger bar and said stop, and tilting and rocking -of said Vframe will be prevented.

k"In witness whereof I have hereunto af-` I fixed my signature, this lstday of October, "1918-, in the presence vof two' subscribing witnesses.

VVitnesSeS: f Y

AUGUST /KRUG, v Y F. T. WENTWORTH.

BENJAMIN wExLER. i 

